EPM5032DC-20 - 32-Macrocell UV PLD, 20ns DIP-20 | Altera
MPN: EPM5032DC20 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $15.75 | $157.50 |
| 100 | $12.4 | $1,240.00 |
| 500 | $9.85 | $4,925.00 |
| 1,000 | $8.2 | $8,200.00 |
EPM5032DC20 Overview
A Programmable Logic Device (PLD) is a general-purpose digital IC whose logic function and interconnect are defined by the user after manufacture, in contrast to a fixed-function ASIC or gate array. The MAX 5000 family belongs to the larger class of Complex Programmable Logic Devices (CPLDs), which sit hierarchically below FPGAs and above simple PAL/GAL devices in the programmable-logic taxonomy. Within that hierarchy, the EPM5032DC-20 offers non-volatile (UV-erasable) configuration, deterministic timing, and a small DIP footprint suitable for legacy and through-hole designs.
Key features include 32 macrocells organized through a global PIA, 7 dedicated inputs and 16 bidirectional I/O pins yielding up to 24 inputs, 16 output macrocell functions, one global clock input, and a 5 V (typically 4.75-5.25 V) supply. The 20 ns combinatorial delay and 71.4 MHz Fmax make it suited for glue logic, address decoding, and state-machine replacement where predictable timing matters more than density.
The device uses Altera's classic EEPROM/EPROM-style macrocell with a fixed-OR / programmable-AND plane feeding the PIA, providing a register-rich architecture with both D, T, JK, and SR flip-flop modes. Each macrocell includes a programmable output enable and polarity control, and the device supports asynchronous clear plus a global clock network for synchronous design.
Typical applications include legacy peripheral controllers, industrial bus-interface glue logic (ISA, PC/104, VME), address-decoding replacement of 74LS/74F series logic, and educational or replacement-stock designs that require a UV-erasable, through-hole programmable part. The ceramic windowed DIP also makes the part reusable during prototyping and lab rework.
When designing, note that the EPM5032DC-20 is a member of an older, mature Altera family now supported by Intel; firmware (JEDEC) is generated with MAX+PLUS II or the legacy Altera MAX+PLUS baseline tools. Designers should budget for the ceramic DIP's larger PCB footprint and provide a 5 V regulated rail with adequate decoupling near VCC pins.
This page synthesizes verified distributor listings, package pinouts, and same-family drop-in alternatives that are not aggregated on a single manufacturer page, helping sourcing and lifecycle decisions for this legacy part.
Drop-in alternatives for EPM5032DC20 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with EPM5032DC20 (same form factor and footprint) — differing in Package, Device Type, Operating Temperature, Supply Voltage (VCC), Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EPM5032DC-25
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →EPM5032DC-15
✅ Drop-In✓ In Stock
$9.95 / Unit
View Datasheet →EPM5032DC-2
✅ Drop-In✓ In Stock
$8.75 / Unit
View Datasheet →EPM5032DC
✅ Drop-In✓ In Stock
$10.4 / Unit
View Datasheet →EPM5016DC-20
✅ Drop-In✓ In Stock
$16.5 / Unit
View Datasheet →EPM5032DC20 Maximum Ratings & Electrical Characteristics
| Device Family | MAX 5000 |
| Product Type | UV-erasable PLD (CPLD class) |
| Macrocells | 32 |
| Usable Gates | 600 |
| Propagation Delay (tPD) | 20 ns |
| Maximum Frequency (Fmax) | 71.4 MHz |
| Supply Voltage (VCC) | 5 V (4.75 V to 5.25 V) |
| Dedicated Inputs | 7 |
| I/O Pins | 16 (bidirectional) |
| Total Inputs (max) | 24 |
| Output Macrocells | 16 |
| Clock Inputs | 1 (global) |
| Architecture | PAL-type with Programmable Interconnect Array (PIA) |
| Process Technology | CMOS |
| Package | 20-pin Ceramic DIP (DC) with UV window |
| Mounting Type | Through-Hole (DIP) |
EPM5032DC20 Pin Configuration
| Pin 1 | IN1 — Dedicated input 1 |
| Pin 2 | IN2 — Dedicated input 2 |
| Pin 3 | IN3 — Dedicated input 3 |
| Pin 4 | IN4 — Dedicated input 4 |
| Pin 5 | IN5 — Dedicated input 5 |
| Pin 6 | IN6 — Dedicated input 6 |
| Pin 7 | IN7 — Dedicated input 7 |
| Pin 8 | IO1 — Bidirectional I/O pin 1 |
| Pin 9 | IO2 — Bidirectional I/O pin 2 |
| Pin 10 | IO3 — Bidirectional I/O pin 3 |
| Pin 11 | IO4 — Bidirectional I/O pin 4 |
| Pin 12 | GND — Ground |
| Pin 13 | IO5 — Bidirectional I/O pin 5 |
| Pin 14 | IO6 — Bidirectional I/O pin 6 |
| Pin 15 | IO7 — Bidirectional I/O pin 7 |
| Pin 16 | IO8 — Bidirectional I/O pin 8 |
| Pin 17 | IO9 — Bidirectional I/O pin 9 |
| Pin 18 | IO10 — Bidirectional I/O pin 10 |
| Pin 19 | CLK — Global clock input |
| Pin 20 | VCC — +5 V supply |
Typical Applications
EPM5032DC20 is suitable for 6 applications: Legacy Address Decoding and Glue Logic, Industrial Bus Interface Adapter, State Machine Replacement on Legacy Boards, Through-Hole Prototyping and Education, Vintage Computing Restoration, Peripheral Controller for 5 V Embedded Systems.
Legacy Address Decoding and Glue Logic
The EPM5032DC-20 is well-suited to replace dozens of 74LS/74F series decoder and latch packages with a single 32-macrocell PLD, simplifying legacy ISA, VME, and PC/104 bus boards. Its 20 ns pin-to-pin delay and 5 V CMOS I/O match the timing of the TTL logic it replaces, while the 16 I/O pins and 7 dedicated inputs cover typical 24-bit address plus control-line decoding. DIP-20 through-hole mounting also preserves existing PCB artwork when retrofitting older equipment.
Recommended
Industrial Bus Interface Adapter
The EPM5032DC-20 can implement RS-232/RS-422 handshake state machines, parallel-port bit-banging protocols, and 8/16-bit custom industrial bus controllers in a single programmable device. The 71.4 MHz toggle frequency comfortably handles 115200 baud UART logic and 1 MHz parallel handshakes, while the 600-gate density absorbs medium-complexity state machines plus arbitration logic. 5 V tolerance makes it directly compatible with industrial PLC backplanes and older CNC controllers.
Recommended
State Machine Replacement on Legacy Boards
The EPM5032DC-20 fits neatly into vintage computing, point-of-sale, and telecom equipment where the original discrete state machines have failed or need modernization. Each of its 32 macrocells can be configured as D, T, JK, or SR flip-flops, supporting both Mealy and Moore machines with deterministic 20 ns propagation. The UV-erasable windowed package allows iterative lab debugging and field re-programming when design corrections are needed.
Recommended
Through-Hole Prototyping and Education
The EPM5032DC-20 ceramic windowed DIP is widely used in university digital-logic labs and engineering training kits because it can be erased with a UV eraser and reprogrammed dozens of times. Breadboards and wire-wrap prototyping benefit from the standard 0.300 inch DIP-20 footprint and 5 V single supply, simplifying lab power distribution. The MAX+PLUS II toolchain is also widely supported in academic license programs.
Recommended
Vintage Computing Restoration
The EPM5032DC-20 is a common replacement part for retrocomputing hobbyists restoring 1980s and 1990s motherboards, disk controllers, and graphics cards that originally used MAX 5000 logic. Its ceramic windowed DIP footprint matches the original through-hole pads exactly, requiring no PCB modification. The 5 V supply and TTL-compatible I/O thresholds mean it can drop into XT, AT, and early PowerPC motherboards with no level shifting.
Recommended
Peripheral Controller for 5 V Embedded Systems
The EPM5032DC-20 can serve as a custom peripheral controller in 5 V-only embedded systems such as motor-control front ends, instrument front panels, and legacy test equipment. Its 16 I/O pins drive LEDs, relays, and low-speed parallel ADC/DAC devices directly, while 7 dedicated inputs accept interrupts and handshake signals from the host microcontroller. The 20 ns delay is fast enough to debounce switches and sequence power rails without external logic.
Recommended
Recommended Products Summary
Engineering reference data for EPM5032DC20 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM5032DC-25 | EPM5032DC-15 | EPM5032DC-2 | EPM5032DC | EPM5016DC-20 |
|---|---|---|---|---|---|---|
| Package | 20-pin Ceramic DIP (DC) | 20-pin Ceramic DIP (DC) - same | 20-pin Ceramic DIP (DC) - same | 20-pin Ceramic DIP (DC) - same | 20-pin Ceramic DIP (DC) - same | 20-pin Ceramic DIP (DC) - same |
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Macrocells | 32 | 32 | 32 | 32 | 32 | 16 |
| Propagation Delay (tPD) | 20 ns | 25 ns | 15 ns | ~20 ns (commercial grade) | ~30 ns (un-suffixed) | 20 ns |
| Maximum Frequency | 71.4 MHz | 62.5 MHz | 83.3 MHz | 71.4 MHz | ~55 MHz | 71.4 MHz |
| Usable Gates | 600 | 600 | 600 | 600 | 600 | 300 |
| I/O Pins | 16 | 16 | 16 | 16 | 16 | 16 |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Key Differentiators
- Faster speed grade within the same MAX 5000 family (vs EPM5032DC-25)
- Larger logic density than the EPM5016 family (vs EPM5016DC-20)
- Windowed ceramic package for laboratory reuse (vs EPM5032DC-2 (commercial OTP))
Design Notes
Estimated: the EPM5032DC-20 typically draws roughly 100-200 mA on its 5 V supply during DC operation depending on toggle rate and output loading. Place a 0.1 uF ceramic decoupling capacitor within 5 mm of the VCC pin (pin 20) and a bulk 10 uF tantalum on the same 5 V rail. Because the part shares a 5 V rail with TTL glue logic, use a low-impedance ground return and avoid star-ground topologies that could inject switching noise into the global clock network.
Keep the global clock trace (pin 19) short and direct, shielded by a ground trace on adjacent layers. The 7 dedicated inputs (IN1-IN7 on pins 1-7) should be routed away from outputs to minimize cross-talk, and the 16 I/O pins should be assigned in bank order to simplify pin-out locking in MAX+PLUS II. The ceramic DIP-20 footprint allows standard 0.300 inch row spacing and 0.100 inch pin pitch, but socket the device in a 20-pin machined-pin DIP socket for easy UV erasure during prototyping.
Do not assume modern Intel Quartus software supports the EPM5032DC-20; use MAX+PLUS II baseline or MAX+PLUS II 10.2 baseline on Windows XP/7. UV erasure requires a 254 nm UV lamp at roughly 6-8 W/cm^2 for 20-30 minutes - erasing under sunlight will NOT clear the EPROM cells. Finally, avoid specifying the EPM5032DC-20 in new designs because it is obsolete; choose a MAX II or MAX V CPLD for new platforms to ensure long-term toolchain and silicon support.
Compliance Information
RoHS, REACH, and lead-free status for the EPM5032DC-20 are not documented in the verified web data; ceramic windowed DIP packages from the MAX 5000 era typically predate RoHS compliance and may contain lead-bearing solder finish. Marked as unknown pending datasheet confirmation.
